Grinding and polishing machine



' (No Model.) E. R. WARE.

GRINDING AND POLISHING MACHINE.

,1884. F i Paten .djpr .8

N. PETERSi Hmbo-uma m mr, Winhingkun, D. Q

25 by constituting a supporting-frame.

UNITED S'rarnsv EDMUND R. WARE, OF \VOROESTER, MASSACHUSETTS.

GRlNDING AND POLISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 296,656, dated April 8, 188%.

Application filed Januaryfifi, 1884. (No model.)

, Zo' aZZ whomz't nmg concern..-

Be it known that I, EDMUND 1t. WARE, a citizen of the United States, residing at Worcester, in the. county of "Worcester and State of Massachusetts, have invented certain new and useful Improvements in Grinding and Polish ing Machines, of which the following is a specification, reference being'had therein to the accompanying drawings.

Figure 1 is a perspective view of my improved machine. Fig. 2 is a top or plan view Without the carrier. Fig. 3 is a horizontal section of a part of the machine, showing the mechanism for actuating the driving-chain.

Fig. 4c is a'vertical transverse section on line w m, Fig. 2. Fig. 5 is a vertical section enlarged of the grinder and its shaft. Fig. 6 is an end view of a portion of the traveling bed. Fig. 7 is a detached view, enlarged, showing 2othe devices for supporting the outer edgeof the carrier.

' A A are supporting posts or legs, and B O are horizontal side pieces or ways, by prefen ence cast in one piece with the legs A A, there- The side piece, 0, may be grooved upon its upper edge, as indicated in Figs. 1 aud t, as may be the other side piece, if desired.

D cl (see Figs. 2, 4, 6) represent, respectively, the bottom and upwardly-projecting standards or end pieces" of a traveling bedplatewhich slides backward and forward upon the upper edges of the side pieces, B G.

d d are sliding plates or boxes having wedge- 5 shaped edges to fit the V-shaped grooves in the standards (2 d of the traveling bed-plate. This construction of the devices for support ing the carrier, to be hereinafter described, is shown plainly in Figs. 2, 4., and 6; but the 40 lines illustrating such construction are omit ted from Fig. 1 in order to avoid obscurity.

E E E are band-pulleys. I f is a horizontalshaft, journaled in the bedframe, and having the outer pulley, E, keyed thereto.

The pulley 11 is loose, while the pulley l? is provided with the sleeve or tubular projection, which extends through the side piece, 13, and has a beveled pinion keyed to its inner end. The shaft f carries also a beveled pinion close to the inner face of the side PATENT OFFICE.

piece, 0, and these pinions mesh with the third horizontal pinion. sprocket-wheel, f, the teeth of which-take into Shaft j" carries a an endless chain, F, attached to the traveling bed-plate, and alsocarries a beveled gear, 1*, which meshes with the horizontal beveled pinion f, so that when the belt, which is driven from any desired motor, is on the pulley E, the sprocketwheel f is rotated in one direc= tion by means of the beveled pinions f f", and

when the belt is on the pulley E the sprocketwheel f is driven in a reverse direction by means of the beveled pinionsf j. is supported upon anti-friction wheels near each end of the main frame, the journal of one The chain of the anti-friction wheels being preferably mounted in a sliding plate, 5, there being also, by preference, a set-screw or bolt, 2), connect-- ing the plate with the end of the framework in such manner that the tension of the chain can be regulated at will. I, The central pulley, E", is mounted loosely on shaft f, and the belt is directed to one or the other of these three pulleys by devices which I will now describe. F F is a belt-shifter actuated by trippcrs e 6, (see Fig. 2,) attached to the traveling bedplate, and by preference made adjustable thereon, and connected with the rock-shaft F of the belt-shifter by means of a sliding bar, F, which is arranged transversely of the machine below the bed-plate, and is connected with. a crank-arm of the roclnshaft, as is indicated in dotted lines, Fig. 4. Thus it will be seen that these trippcrs c e alternately engage with the opposite side of an arm which projects upwardly from the sliding bar or rod F and shifts the belt from pulley E to pulley E and vice versa, thereby reversing the direction of travel of the bed-plate D d.

(1 cl are set-screws passing through the bottom of the traveling bed-plate near its ends,

to adjust the height from the bed-plate of the the carrier; but I do not wish to be limited to this specific mode of connecting the inner side also in a plane which is parallel with the horicess or socket, h, and a horizontal recess or zontal plane or path traversed by the inner edge of the carrier -that is to say, when the inner edge of this carrier travels in a horizontal path the rail or track G should be horizontal. The outer edge or side of this carrier is provided with two or more downwardlyprojecting legs, H, each having a vertical resocket, h. V

I is a bifurcated standard carrying a supporting-wheel, I, at its lower end, its upper end being screw-threaded and of such diameter as to enter the recess or socket h. The lower portion of this socket is square or rectangular in cross-section, the adjacent portion of the standard I being of similar size and shape, so that while the standard may move freely up and down in the socket it shall not turn round therein.

J is an adj Listing-shaft mounted in bearings upon the legs H H, and carrying worms,which take into the teeth of worm-nuts fitted to receive the upper screwthreaded end of each of the standards I, and to turn in the recesses h h, the construction and arrangement of these parts being shown more clearly in Fig. 7 Thus it will be seen that by means of the setscrews (1 the operator can raise and lower the inner edge or side of the carrier relative to the traveling bed D, and can also raise and lower the outer edge or side of said carrier by turning the adjusting-shaft J in one direction or the other, the pivots d d facilitating these adjustments without"producing any undue cramping of parts.

K is a hollow supporting-post cast in one piece with or firmly attached to the side piece, B, and expanded at its upper end to form grooved or dovetailed ways K.

L is a'sliding plate supported in the ways K K.

M is a base-plate having upwardly-projecting arms cast therewith, upon which is mounted the grinder-shaft N. The base-plate is provided upon its opposite edges with circular slots m on, through which bolts or set-screws pass into the sliding plate L, by means of which construction the grinder-shaft can be adjusted to differentangles relative to the path of the carrier. (See Figs. 1, 2, and 6.)

a is a belt-pulley on the grinder-shaft.

O is a shaft supported at one endin the post K, and at its opposite end in a hanger or pendent from the side piece, 0.

O is a screw-threaded shaft mounted in the upper end of hollow post K, and taking into the threaded lower end of a shank, m, which projects downwardly from the underside of the sliding plate. (See dotted lines in Fig. 4.)

P is a chain or belt connectingshafts O 0, so that the operator, by means of one or the other of the cranks on shaft 0, can move the plate L and the grinder backward and forward relative to the path of the traveling bed-plate.

The grinder Q is flat upon one face, and may be beveled upon its opposite or outer face, 7 5 and is, by preference, constructed with recesses q, to receive the flanges,between which it is gripped to hold it firmly to its shaft N.

Under some circumstances I may prefer to support the rail or track G upon the posts A, in order to guard against any interference with the relative alignment of parts by settling of the foundations or support upon which the machine stands, although under ordinary circumstances a satisfactory relation of parts 8 5 can be maintained when said rail or track is supported independently of the posts of the main frame.

It will be understood that by reason of the carrier being of such width that it projects 0 some distance over the side of the main frame and the traveling bed mounted thereon, it is impossible to arrange the band-pulleys E E upon that side of the main frame beyond which the carrier projects; and as it is desir- 5 able that the support for the grindershaft should be arranged as close as possible to the article to be ground, both for the purpose of making a compact machine and also to provide against chattering or undue vibration of I00 parts, I have arranged the trippers upon the side of the traveling bed-plate opposite to that I occupied by the pulleys, thus not only permitting the sliding plate L, which carries the grinder-shaft, to approach very closely to the traveling bed, but also enabling the operator to stop and start the machine while standing 1 within convenient reach of the work which is being polished or ground. It will be seen that this result is attained by the construction 1 IO which I have invented, because the operator can shift the belt from either of the pulleys E E to the loose pulley E while standing upon either side of the machinethat is to say,when standing upon the side on which the pulleys 1 I 5 are arranged, he can do it by taking hold of the vibrating arm K", between the fingers or loop in which the belt runs, and he can also shift the belt in the same manner while standing'upon the opposite side of the machine by I20 means of the sliding bar or rod K It will also be readily understood that by reason of the trippers being arranged upon the opposite side of the machine from the grinding-wheel,

the post K can be arranged in very close prox- 12 5 imity to one edge of the traveling bed-plate.

This machine is especially adaped for grinding .heavy plates-such as, for instance, the cast-iron plates employed in the construction of iron fronts for buildings; but I do not claim I 30 herein the mechanism by means of which the operator can thus move the belt-shifter from either side of the machine; nor do I claim, in

this case, any of theinventions shown or de scribed herein, except such as are specifically recited in the claims herein, rcservin g the right adjusting the grinding-wheel toward and from the path of the traveling plate, substantially as set forth.

2. In a grinding and polishing machine, the

, combination, with the horizontal supportingbed, of the traveling bed-plate, the carrier pivoted at one side to the bed-plate, means for supporting the opposite side of the carrier independently of the horizontal supportingbed and for adjusting the edge of the carrier vertically, a grinding-wheel, and means for adjusting the grinding-wheel toward and from the path of the traveling bedplate, substantiallyas set forth.

3. In a grinding and polishing machine, the combination of the horizontal supporting-bed, the traveling bed-plate, a carrier pivoted at one side to the traveling bed-plate, means for.

supporting the opposite side of the carrier independently of the horizontal supporting-bed, a grinding-wheel, the shaft of which is sup portedwholly at one side of the traveling bedplate, and means for adjusting the grindingwheel toward and from the path of the traveling bed-plate, substantially as set forth 4. In a grinding and polishing machine, the combination of the horizontal supporting-bed, the traveling bed-plate, a carrier attached at one edge to the traveling bed-plate, and a carrying-wheel adjustably connected to the opposite edge of the carrier, substantially as set forth. V

5. In a grinding and polishing machine,

the combination of the horizontal supportingframe, the traveling bed-plate, a grinding wheel supported wholly upon one side of the I traveling bedplate, a carrier supported at one side upon the traveling bed-plate, and means for supporting the opposite side of the carrier independently of the traveling bed-plate, substantially as set forth.

6. In a grinding and polishing machine, the combination, with the outer edge of the carrier, of the leg H, the standard I, supported in said leg and extensible relative thereto, and

the supporting-wheel 1, substantially as set forth. I

7 In a grinding and polishing machine, the combination, with the outer side or edge of the carrier, of the legs H, the screw-threaded standards I, the nuts 72, seated in the legs H, and

the adjusting-shaft J, for simultaneously raising and lowering both ends of the carrier, substantially as set forth In testimony whereof I aiiiX my signature in presence of two witnesses, EDMUND R. WVARE.

Witnesses:

A. J. WARREN, EDWARD H. RYDER. 

